Structural and morphological transformations of carbon nanospheres during high-temperature, high-pressure processing
- 31 Downloads
This paper presents analysis of structural changes in powders consisting of turbostratic carbon spheres with an average particle diameter of 250 and 25 nm after high-temperature, high-pressure processing at a pressure of 8 GPa. It has been shown that marked ordering of graphene sheets is observed at 1300°C and actively proceeds at higher temperatures. The major morphological species in the samples after processing is slabs of graphene sheets, and three-dimensional structural perfection is higher at the smaller particle size. Using high-resolution electron microscopy, samples of this powder were shown to contain diamond nanocrystallites.
Keywordsturbostratic carbon spheres high pressures graphite diamond
Unable to display preview. Download preview PDF.
- 1.Trenikhin, M.V., Ivashchenko, O.V., Eliseev, V.S., Tolochko, B.P., Arbuzov, A.B., Muromtsev, I.V., Kryazhev, Yu.G., Drozdov, V.A., Sazhina, E., and Likholobov, V.A., Electron microscopy investigation of structural transformation of carbon black under influence of high-energy electron beam, Fullerenes, Nanotubes, Carbon Nanostruct., 2015, vol. 23, pp. 801–806.CrossRefGoogle Scholar
- 3.Brazhkin, V.V., Lyapin, A.G., Popova, S.V., Voloshin, R.N., Antonov, Yu.V., Lyapin, S.G., Kluev, Yu.A., Naletov, A.M., and Mel’nik, N.N., Metastable crystalline and amorphous carbon phases obtained from fullerite C60 by high-pressure-high-temperature treatment, Phys. Rev. B: Condens. Matter Mater. Phys., 1997, vol. 56, no. 18, pp. 11465–11471.CrossRefGoogle Scholar
- 4.Ivanovskaya, I.N., Shterenberg, L.E., Makhov, S.F., Musina, A.R., and Filonenko, V.P., Carbon isotope fractionation during solid-state synthesis of diamond, Geokhimiya, 1981, no. 9, pp. 1415–1417.Google Scholar
- 5.Davydov, V.A., Shiryaev, A.A., Rakhmanina, A.V., Filonenko, V.P., Lyapin, S.G., Vasiliev, A.L., Roddatis, V.V., Autret, C., Agafonov, V.N., and Khabashesku, V.N., Transformations of polyhedral carbon nanoparticles under high pressures and temperatures, Carbon, 2011, vol. 49, pp. 2389–2401.CrossRefGoogle Scholar
- 6.Filonenko, V.P., Zibrov, I.P., Antanovich, A.A., Borovikov, N.F., and Malyshev, S.N., Ultrafine-grained superhard composites, Perspekt. Mater., 2012, no. 3, pp. 1–11.Google Scholar
- 7.Bukalov, S.S., Mikhalitsyn, L.A., Zubavichus, Ya.V., Leites, L.A., and Novikov, Yu.N., Structure of graphites and some other sp2 carbon materials studied by micro-Raman spectroscopy and X-ray diffraction, Ross. Khim. Zh., 2006, vol. 50, no. 1, pp. 83–91.Google Scholar
- 8.Ferrari, A.C., Raman spectroscopy of graphene and graphite: disorder, electron–phonon coupling, doping and nonadiabatic effects, Solid State Commun., 2007, vol. 143, pp. 47–57.Google Scholar
- 11.Pyanova, L.G., Luzyanina, L.S., Drozdov, V.A., Veselovskaya, A.V., Arbuzov, A.B., and Likholobov, V.A., Study of the effect of a number of oxidizers on variation of composition of surface functional groups, porous structure, and adsorption properties of composite carbon–carbon sorbent, Prot. Met. Phys. Chem. Surf., 2010, vol. 46, no. 3, pp. 320–324.Google Scholar
- 12.Britun, V.F., Kurdyumov, A.V., and Petrusha, I.A., Structural aspects of the nucleation of dense phases in response to the compression of hexagonal graphite, Sverkhtverd. Mater., 2003, no. 5, pp. 11–18.Google Scholar